An automated guideway transit (AGT) or automated fixed-guideway transit or automatic guideway transit system is a type of fixed guideway transit infrastructure with a riding or suspension track that supports and physically guides one or more driverless vehicles along its length. The vehicles are often rubber tired or steel wheeled, but other traction systems including air cushion, suspended monorail and maglev have been implemented. The guideway provides both physical support, like a road, as well as the guidance.

AGT covers a wide variety of systems, from limited people mover systems commonly found at airports, to more complex automated train systems like the Vancouver SkyTrain. In the people mover role the term "automated people mover" (APM) is sometimes used, although this distinction is relatively rare because most people movers are automated. Larger systems span a variety of conceptual designs, from subway-like advanced rapid transit (ART) systems to smaller (typically two to six passengers) vehicles known as personal rapid transit (PRT) which offer direct point-to-point travel along a switched network.